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780 Armenia (A914 BJ)
Classification: Main-belt Asteroid          SPK-ID: 2000780
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09763626800856083 2.3664e-08  
a 3.113228299846507 1.2354e-08 au
q 2.809264307190857 7.7512e-08 au
i 19.09054288024442 4.9523e-07 deg
node 144.8359706351312 2.4182e-06 deg
peri 213.6305173625516 1.3965e-05 deg
M 274.3486037091243 1.3088e-05 deg
tp 2459677.860882547391
(2022-Apr-08.36088255)
7.373e-05 TDB
period 2006.387813380784
5.49
1.1943e-05
3.27e-08
d
yr
n .1794269271369807 1.0681e-09 deg/d
Q 3.417192292502156 1.3561e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3051  
   data-arc span      40919 days (112.03 yr)  
   first obs. used      1909-02-20  
   last obs. used      2021-03-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39326  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 11:25:50  

Additional Information
 Earth MOID = 1.81686 au 
 Jupiter MOID = 2.01371 au 
 T_jup = 3.126 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 9.09   n/a E2021B10  
diameter diameter 126.263 km 0.759 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 19.891 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V.; Pilcher, F. (2009) Minor Planet Bull. 36, 167-168.]
[Marciniak, A.; Pilcher, F.; Oszkiewicz, D.; Santana-Ros, T.; et al. (2015) Planet. Space Sci. 118, 256-266.]
geometric albedo albedo 0.028   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

780 Armenia (A914 BJ)          Discovered 1914-Jan-25 by Neujmin, G. at Simeis
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 A914 BJ = A909 DE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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